There was a day, not too long ago, when we were trying to teach our dog Kyle to behave out of the crate while we were out.  We left that night for about 2 hours, and when we came back he had eaten 16 muffins that I had covered up and left on the counter.  The next day we tried again, we were gone for maybe 30 min, and he had eaten a half a loaf of bread and a full package of hamburger buns!